lucene简单入门demo

package com.pdsu.lucene;

/**
* 类说明：
*
* @author 作者: LiuJunGuang
* @version 创建时间：2011-12-29 下午04:40:39
*/
public class Article {
private int id;
private String title;
private String content;

public int getId() {
return id;
}

public void setId(int id) {
this.id = id;
}

public String getTitle() {
return title;
}

public void setTitle(String title) {
this.title = title;
}

public String getContent() {
return content;
}

public void setContent(String content) {
this.content = content;
}

public Article(int id, String title, String content) {
super();
this.id = id;
this.title = title;
this.content = content;
}

public Article() {
super();
}

@Override
public String toString() {
return "Article [id=" + id + ", title=" + title + ", content="
+ content + "]";
}

}

package com.pdsu.lucene;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.Field.Index;
import org.apache.lucene.document.Field.Store;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.IndexWriter.MaxFieldLength;
import org.apache.lucene.queryParser.QueryParser;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.ScoreDoc;
import org.apache.lucene.search.TopDocs;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.FSDirectory;
import org.apache.lucene.util.Version;
import org.junit.Test;

/**
* 类说明：
*
* @author 作者: LiuJunGuang
* @version 创建时间：2011-12-29 下午04:42:21
*/

public class Lucene {

@Test
public void insert() throws IOException {
Article article = new Article(1, "lucene is very good!",
"lucene very good!,lucene very good!");

Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_30);// 分词器
Directory dir = FSDirectory.open(new File("./store")); // 数据存储目录
IndexWriter index = new IndexWriter(dir, analyzer,
MaxFieldLength.LIMITED);
Document document = new Document();// 文档对象
Field idField = new Field("id", String.valueOf(article.getId()), Store.YES, Index.NOT_ANALYZED);
Field titleField = new Field("title", article.getTitle(), Store.YES, Index.ANALYZED);
Field contentField = new Field("content", article.getContent(), Store.YES, Index.NOT_ANALYZED);
document.add(idField);
document.add(titleField);
document.add(contentField);
index.addDocument(document);// 添加文档对象
index.close();
}

@Test
public  void query() throws Exception{
Directory dir = FSDirectory.open(new File("./store")); // 数据存储目录
IndexSearcher indexSearcher = new IndexSearcher(dir);

Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_30);// 分词器
QueryParser qp = new QueryParser(Version.LUCENE_30, "title", analyzer);
Query query = qp.parse("lucene");
TopDocs tops = indexSearcher.search(query, 10);
//获得记录总条数
int count = tops.totalHits;

ScoreDoc []scoreDocs =  	tops.scoreDocs;//得到目录
List<Article> articles = new ArrayList<Article>();
for (int i = 0; i < scoreDocs.length; i++) {
float score = scoreDocs[i].score;//相关度得分
int doc = scoreDocs[i].doc;
Document document = indexSearcher.doc(doc);
Article article = new Article(Integer.parseInt(document.get("id")), document.get("title"),document.get("content"));
articles.add(article);
}
System.out.println(articles);
}
}